The rapid increase in adaptive immunity after a second antigen exposure is called
A) immune memory.
B) specificity.
C) tolerance.
D) immune memory, specificity, or tolerance.
Answer: B
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If a dihybrid cross is begun with a P1 generation of a true-breeding plant that produces smooth and yellow peas (smooth and yellow are both dominant traits), crossed with a plant that produces wrinkled green peas (wrinkled and green are both recessive traits), the F1 plants will all be smooth and yellow
a. True b. False Indicate whether the statement is true or false
Human sweat has antimicrobial activity due to
A. production of an antimicrobial peptide called cathelicidins. B. production of low molecular weight compounds that chelate free iron. C. production of low molecular weight compounds that maintain an alkaline pH. D. competition with normal sweat gland flora.
Which of the following features are used to identify chordates?
A. A notochord B. A hollow nerve cord C. A tail during embryonic development D. All of the above are features used to identify chordates.
_________________________ is the anaerobic breakdown of glucose to pyruvates.
A.) Kreb's cycle B.) electron transport chain C.) glycolysis D.) fermentation